University of Oklahoma president David Boren announced Monday that linebacker Frank Shannon is suspended for the year, but the school has been unable to enforce the decision.

Shannon was initially suspended June 18, as reported by The Oklahoman, after a Title IX investigation by the school uncovered an alleged sexual assault from January. He appealed the decision after the original announcement, which prevented him from being suspended.

The University brought the case to the Supreme Court on Monday, asking it to overturn an earlier ruling that allowed Shannon to remain enrolled in school and participate in football activities.

"The University is unable to enforce its process at this time," Boren said in a statement. "The University has and is taking every legal step possible to move this process forward. The university is currently seeking to enforce its decision so that it may be in compliance with federal law requiring responses by institutions to such matters in a timely manner. With the fall semester beginning August 18, time is of the essence."

According to Boren's statement, the investigation included "the Title IX Office inquiry, a hearing panel comprised of faculty and staff, and an appeal to the chief student affairs officer."

Last season, Shannon recorded 92 tackles while helping lead the Sooners to a Sugar Bowl win over Alabama.

The school said federal privacy law and other legal considerations prohibited it from making further statements.